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Finding the Fourth Proportional to 750.24, 1,035.35 and 418.65

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Solution

The fourth proportional to 750.24, 1,035.35 and 418.65 is: 577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.24 : 1,035.35 = 418.65 : x
  2. Step 2: Convert to fraction form
    750.24/1,035.35 = 418.65/x
  3. Step 3: Cross multiply
    750.24x = 1,035.35 × 418.65
  4. Step 4: Simplify right side
    750.24x = 433,449.28
  5. Step 5: Solve for x
    x = 433,449.28/750.24
  6. Step 6: Final answer
    x = 577.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.